There is no level 50, but level 21 is 51210.
Level 18 is 35626 on ORB 2 and ORB 2 TNL.
The last level to orb 2 is 51210
There are only 20 playable levels in Orb 2
There is no level 23, but to get to level 22 just google Orb 2, click the second result, and complete the game here to unlock level 22.
51210
*
65617
51210 is for level 21
1356009
51210
there is no lvl 30
41205